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March 31st, 2014, 11:37 AM  #31 
Global Moderator Joined: Dec 2006 Posts: 20,966 Thanks: 2216 
It's not what you were saying, because wikipedia is using a different definition of trapezoid that doesn't require that there is only one pair of parallel sides.

March 31st, 2014, 01:09 PM  #32 
Senior Member Joined: Nov 2013 Posts: 247 Thanks: 2 
Yeah wikipedia uses this definition: In Euclidean geometry, a convex quadrilateral with at least one pair of parallel sides is referred to as a trapezoid


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